Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a366fcbd04d87dd…

MALICIOUS

PDF

33.4 KB Created: 2020-08-11 03:43:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58a9f67d6607437fb1c01fdb89244afd SHA-1: 77e6875ef3c6468c39abcaff3ff948de8f5737ab SHA-256: 9a366fcbd04d87dd5e0d33e43440bc6ad76e94ca24c6f89f11160f2240612972
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation. One prominent link, 'https://ttraff.com/pify?keyword=cgp+functional+skills+maths+level+2+pdf', is identified as a malicious redirector. This indicates the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=cgp+functional+skills+maths+level+2+pdf
    • http://files.lldmshakopee.org/uploads/1/3/1/0/131071253/pugot.pdf
    • http://files.ov4h.com/uploads/1/3/2/8/132814958/2196492.pdf
    • http://files.monroeyouthcommission.org/uploads/1/3/0/7/130740128/suxopuberuzak.pdf
    • https://cdn.shopify.com/s/files/1/0434/7301/0840/files/rubibusoruzakogogavavaw.pdf
    • https://cdn.shopify.com/s/files/1/0440/0198/4662/files/passive_voice_simple_future_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0431/5286/7494/files/87974977863.pdf
    • https://cdn.shopify.com/s/files/1/0437/9151/5805/files/icao_annex_3_18th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0428/5313/8588/files/78158360461.pdf
    • https://cdn.shopify.com/s/files/1/0432/5618/4992/files/51007761000.pdf
    • https://cdn.shopify.com/s/files/1/0437/3980/7893/files/6142953950.pdf
    • https://cdn.shopify.com/s/files/1/0438/4056/9494/files/fomesusenazemifejunovun.pdf
    • https://cdn.shopify.com/s/files/1/0432/4121/0024/files/61341060367.pdf
    • https://cdn.shopify.com/s/files/1/0438/0380/3808/files/koleted.pdf
    • https://cdn.shopify.com/s/files/1/0446/7880/7705/files/education_alternative__madagascar.pdf
    • https://cdn.shopify.com/s/files/1/0430/0773/8019/files/dononegasaro.pdf
    • https://cdn.shopify.com/s/files/1/0438/8729/6680/files/ap_stylebook_2014.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000451e.bin
2970486cb444d8fa57bb09ca435415867f625fc165e3fc4cd923f926f51c6dec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x451E 5636 bytes
font_01_sfnt_off0000582e.bin
865ba7e4d3b29679bc105729dee054e41e2b303befdc01edc1dd5116163c48aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x582E 9460 bytes

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